The effect of phosphorus availability on arbuscular mycorrhizal colonization of Typha angustifolia

Citation
F. Tang et al., The effect of phosphorus availability on arbuscular mycorrhizal colonization of Typha angustifolia, MYCOLOGIA, 93(6), 2001, pp. 1042-1047
Citations number
35
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
MYCOLOGIA
ISSN journal
0027-5514 → ACNP
Volume
93
Issue
6
Year of publication
2001
Pages
1042 - 1047
Database
ISI
SICI code
0027-5514(200111/12)93:6<1042:TEOPAO>2.0.ZU;2-S
Abstract
Although Typha (cattail) species have been reported to be non-mycorrhizal, recent studies have reported arbuscular mycorrhizal (AM) structures in Typh a roots, even in very wet habitats. The purpose of this study was to determ ine the relationship between phosphorus availability and AM colonization of Typha angustifolia. Typha angustifolia was grown in factorial combinations of four phosphorus concentrations (1, 10, 100, and 500 muM P) and two inoc ulum densities (200 or 500 spores/pot), with an uninoculated control treatm ent at 100 muM P. After 13 wk, AM colonization was present in the three low est phosphorus treatments, but was absent from the 500 muM P and control tr eatments. Colonization did not differ significantly between inoculum densit y treatments. Shoot dry mass increased significantly with increased phospho rus and was marginally higher in treatments that received 200 spores than 5 00 spores. Among the 100 muM P treatments, shoot dry mass was significantly higher in the 200 spore treatment than the uninoculated control, but shoot nutrient content did not differ. This study presents clear evidence that A M fungi can colonize T. angustifolia under controlled conditions as a funct ion of phosphorus availability.